Professor Gopal Nath Tiwari, born on July 01, 1951 at Adarsh Nagar, Sagerpali, Ballia (UP), India. He had received postgraduate and doctoral degrees in 1972 and 1976, respectively, from Banaras Hindu University (B.H.U.). Over several years since 1977, He has been actively involved in the teaching programme at Centre for Energy Studies, IIT Delhi. His research interest in the field of Solar Thermal Applications are solar distillation, water/air heating system, greenhouse technology for agriculture as well as for aquaculture, Earth to air heat exchanger, passive building design and hybrid photov...